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《Journal of Analytical Science》 2008-05
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2′,4′,5′,7′-Tetrabromo-4,5,6,7-Tetrachlorofluorescein-Ag~+-Cl~- Adsorptive Precipitation Reaction Coupled with Light-Absorption Ratio Variation Approach for Determination of Cl~-

WANG Hong-yan*1,2,PAN Lu-ting2,BAI Jing2,GAO Hong-wen2(1.Anhui Key Laboratory of Spin Electron and Nanomaterials,Suzhou College,Suzhou,Anhui 234000;2.State Key Laboratory of Pollution Control and ResourceReuse,Tongji University,Shanghai 200092)  
Based on adsorptive precipitation reaction between silver chloride particles and 2′,4′,5′,7′-Tetrabromo-4,5,6,7-Tetrachlorofluorescein,a method called light-absorption ratio variation approach was proposed to determine chloride ions in water samples.The linear range is 0~1 mg/L and detection of limit is 0.03 μg/mL.Three ground waters were analyzed and the determined value is in a good agreement with that obtained by ion chromatography.The system could be used in solutions with strong ionic strength and high temperature.This method is cheap and has high sensitivity and selectivity.It can applied in site or in line to determine Cl-in sea water or samples with high temperature.
【Fund】: 国家自然科学基金(No.20477030);; 安徽省教育厅自然科学研究重点项目(No.KJ2008A06ZC);; 安徽省高校青年教师科研资助计划(No.2008jql138)
【CateGory Index】: X832
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